Cover: Dick Dillin & Sheldon Moldoff

Detective Comics #296

Oct 1961 · DC · 0.10 USD

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In "The Menace of the Planet-Master," Aquaman and Aqualad dive into danger when a terrifying Sea Demon terrorizes coastal fishermen, demanding jewels and treasures. Written by Jack Miller and illustrated with bold flair by Nick Cardy, this 1961 classic sees the heroes unravel the mystery behind the creature’s rampage—revealing a clever disguise and hidden technology. The cover by Dick Dillin and Sheldon Moldoff captures the eerie spectacle with striking detail.

Contains 4 stories

The Menace of the Planet-Master

12.67 pp · Superhero

Batman [Bruce Wayne]Robin [Dick Grayson]Planet-Master [Professor Norbet] (intro, villain)Edward Burke (intro, villain)

Untitled Humor story

0.5 pp · Humor

Lefty Looie

The Alien Bodyguard

6.67 pp · Superhero

Martian Manhunter [John JonesJ'onn J'onzz]Diane Meade (supporting)Rocky Dawson (intro, villain)

The Mystery of Demon Island!

5.67 pp · Superhero

Aquaman [Arthur Curry]Aqualad [Garth]Topo (supporting)The Sea Demon (intro, villain)Omo (native fisherman)

In "The Mystery of Demon Island!" from Detective Comics #296, Aquaman and Aqualad dive into a tropical mystery when a fearsome sea demon—riding a colossal seahorse and wielding a trident—begins terrorizing local fishermen. As the duo investigates, they uncover a shocking truth beneath the monster’s mythic facade.